Fuel Injector: Testing and Inspection
INSPECTIONINSPECT FUEL INJECTOR ASSEMBLY
a. Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.
If the result is not as specified, replace the fuel injector.
b. Inspect the injector injection volume.
CAUTION: Keep the injector away from sparks during this test.
1. Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (the vehicle side).
SST 09268-31011 (09268-41500, 90467- 13001, 95336-08070)
2. Install the O-ring to the fuel injector.
3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
SST 09268-31011 (09268-41110, 09268- 41300, 90467-13001)
4. Put the fuel injector into the graduated cylinder.
CAUTION: Install a suitable vinyl tube onto the injector to contain gasoline spray.
5. Operate the fuel pump.
6. Install SST onto the fuel injector.
SST 09842-30080
7. Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.
NOTE: Always do the switching at the battery side.
HINT: If the result is not as specified, replace the fuel injector.
c. Inspect the fuel leakage.
1. Disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.
Standard: 1 drop or less every 12 minutes
HINT: If the result is not as specified, replace the fuel injector.
2. Turn the ignition switch off.
3. Disconnect the cable from the negative (-) battery terminal.
4. Remove the SST.
5. Disconnect the intelligent tester from the DLC3.
6. Reconnect the fuel main tube to the fuel pipe.